Wednesday
July 23, 2014

Posts by anon


Total # Posts: 1,339

Data Management
what is the probability that either a heart or a face card (K Q J) is chosen but the Q of heart is missing from the deck?

Data Management
a couple is planning to have seven children. what is the probability that at least 3 of the children will have a birthday in the same month

Data Management
if mike does homework today the probability that he will do it tomorrow is 0.8. the probability he will do it today is 0.7. what are the odds that he will do it both today and tomorrow

Data Management
there is a six sided die, number 1- to 6. what is the probability that it it take exactly two tries to roll a 4? what is the expected waiting time until and odd prime number is rolled?

Spanish
Can somebody help with my Spanish review? Combina lógicamente las palabras de vocabulario de las dos columnas. a. la caza b. el boxeo c. penalizar d. el/la jinete e. la cancha f. transnochar g. el campamento h. los naipes 1. el arco y la flecha (A) 2. la tienda de campa...

URGENT! PLEASE HELP QUICK PHYSICS
Summarize two observations that are contrary to the predictions based on Newton’s laws but that confirm Einstein’s explanation of gravity. Indicate how the predictions based on Newton’s theory differ from Einstein’s.

Damon
I've spent 4 hours to solve it as the result question a is done, but i'm a russian teenager, that is going to attend the uneversity, and unfotunately, i don't know how to solve it with non-constant friction koff.

World History
What were the crusades? What motivated most Europeans to join the crusades?

Proofreading
Well SMS was my middle school and now we're in high school and we don;t even go to the same one

Proofreading
tomorrow is my friend's birthday and she's turning 15 so I'm writing her a birthday card and I was wondering if I did any mistakes (I'm going to now write it on the card). Happy Birthday Sarah, You were definitely one of the few people in SMS who managed to mak...

physics
A woman wearing high-heeled shoes stands on a wooden floor. Her total weight is 480N and acts equally on each foot. Why are marks left on the wooden floor by the woman's shoe heels but not her shoe soles?

physics
240n/2cm^2

physics
240n/40 cm^2

physics
A woman wearing high-heeled shoes stands on a wooden floor. Her total weight is 480N and acts equally on each foot. Sometimes all this weight acts on the heels of her shoes. What is the pressure under her heels?

physics
A woman wearing high-heeled shoes stands on a wooden floor. Her total weight is 480N and acts equally on each foot. Sometimes all this weight acts on the soles of her shoes. What is the pressure under her soles? area under sole 40cm squared are under heel 2cm squared

physics
A woman wearing high-heeled shoes stands on a wooden floor. Her total weight is 480N and acts equally on each foot. Sometimes all this weight acts on the soles of her shoes. What is the pressure under her soles?

physics
A woman wearing high-heeled shoes stands on a wooden floor. Her total weight is 480N and acts equally on each foot. Sometimes all this weight acts on the soles of her shoes. What is the pressure under her soles?

Math :-)
It was C nevermind lol thank you anyways

Math :-)
The answer is A. Right?

Math :-)
Analyze the conditional statement below and complete the instructions that follow. You will receive the trophy if you win the championship match. Identify the hypothesis and the conclusion of the conditional statement. A. hypothesis: you will receive the trophy; conclusion: yo...

Math
Which of the following statements is not always true? A. In a rhombus, the diagonals bisect opposite angles. B. In a rhombus, the diagonals are perpendicular. C. In a rhombus, the diagonals are congruent. D. In a rhombus, all four sides are congruent. I think the answer is A. :-)

Math
Which parallelograms have perpendicular diagonals? A. rectangle, rhombus B. square, rhombus C. square, rectangle D. none I know the answer isn't C.

magnets
A particle of charge +q and mass m is initially launched at speed v in a region with a constant, uniform magnetic field of magnitude B. If the particle launched in a direction perpendicular to the magnetic field, by the time the particle has traveled a distance d, the work don...

AP CALC
find an equation of the tangent line to the graph of x^4-2y^2=1 at the point (2,4)

AP CALC
Suppose that g(x)=h(x)/f(x) and f(3)=5, h(3)=6, g'(3)=4 and f'(3)=1. find h'(3).

Math
Alan, Gil, and Deb's point score in a video game was in a ratio of 2:3:4. Deb scored 114,400 points. A) how many points did Gil score? B) how many points did all of them score? i dont know how to do this would you please help me, thank you

electricity and magnets
A thick metal slab carries a current I. A uniform magnetic field B points perpendicular to the slab (and into the page). If point P on the slab is at a higher potential than point , what can we say about the charge carriers that produce the current in the slab?

Physics
Two thin, infinitely long, parallel wires are lying on the ground a distance d=3cm apart. They carry a currentTwo thin, infinitely long, parallel wires are lying on the ground a distance d=3cm apart. They carry a currentTwo thin, infinitely long, parallel wires are lying on th...

physicS IMP PLS
@Greco I tried it and it workrd for a and c and for Fy but Fx was wrong!why did you use alpha? please help with this question!

physics I'M STUCK PZL HELP
is the "u" the ejected fuel in m/s instead of km/s?

physics I'M STUCK PZL HELP
in the equation above what is the "ln"?

PHYSICS IMP PLS
@Hil if you had calculated correctly it seem to be right

PHYSICS IMP PLS
it's simple 10%/2 because 145=290/2 and it said "assume the burn rate is constant" so V=Vex*ln(1/(1-%/2)) for your case V=2000*ln(1/(1-0.05)) a=V/145

Writing Skills
Thank you so much ^_^

Writing Skills
i think 1 is 2 2 is 2 3 is 2 are they correct?

Writing Skills
1) Frequently their renovation need to be completely redone. 1 need 2 needed 3 were needing 4 will have been needing 5 needs 2)If we were teenagers at the time these licenses signified our passage to adulthood. 1 time these licenses 2 time, these licenses 3 time; these license...

Science
How far does a wave travel in three cycles?

Science
The distance from the crest of a wave to the next crest is 10 centimeters. The distance from a crest of this wave to a trough is 4 centimeters. a. What is the amplitude of this wave? b. What is the wavelength of this wave?

World History
How do the beliefs of being a Christian and being a Crusader contradict each other? How are the ideas of the Crusades used today for both Christians and Muslims?

Solar
Someone please help me. I keep getting the same wrong answer (38.4). Please help ASAP. Thanks.

Solar
All, anything on this yet? please help!!! Thanks in advance again./Anon1...didn't know there was an Anon already

Solar
Greeting All, please assist with the below. Thanks. The spectral power density of a solar simulator is given by: P(λ)=7.5∗1015λ−2.25∗109 [Wm^-2m^-1] for 300nm<λ<500nm P(λ)=2.25∗109−1.5∗1015λ [Wm^-2m^-1] for 500...

History
Who were the Seljuk Turks? What did they do?

ET3034TUx Solar Energy
Consider a crystalline PV module with the following output parameters mentioned at STC (Standard Testing Condition) conditions by the manufacturer. Pmax = 250W Voc = 50V Isc = 6A NOCT = 40°C Temperature coefficient of power = -1W/°C a) If the ambient temperature falls ...

Chemistry
Please help! Is 4-methylphenol acid, basic or neutral?

Language Arts
Have you ever wanted to know what people said and thought about you when you weren't around? If you could disguise yourself in some way and be around the people you know, how would you carry it out? Describe your ideal disguise and a scenario that you imagine would take pl...

Language Arts
Thank you! That's just what I needed tips! :-)

Language Arts
describe a soggy, wet day. use sensory details.

Physics
can you help me with the problem of TURNTABLE SOLUTIONS???

Physics
thanks Elena you're the best ;)

Physics
TORQUE, ROTATION AND TRANSLATION A Yo-Yo of mass m has an axle of radius b and a spool of radius R . Its moment of inertia about the center can be taken to be I=(1/2)mR2 and the thickness of the string can be neglected. The Yo-Yo is released from rest. You will need to assume ...

Physics
it didn't work :(

Physics
TURNTABLE SOLUTIONS A gyroscope consists of a uniform disc of mass radius M= 1 kg and radius R= 0.3 m . The disc spins with an angular speed ω= 400 rad⋅s-1 as shown in the figure below. The gyroscope precesses, with its axle at an angle 30∘ below the horizonta...

water treatment
A wastewater treatment plant based on activated sludge with biological phosphate and nitrogen removal via pre-denitrification. The influent flow (dwf) is 30,000 m3/day and the influent BOD concentration is 300 mg BOD/l. The suspended solid concentration in the influent is 150 ...

water treatment
A wastewater treatment plant based on activated sludge with biological phosphate and nitrogen removal via pre-denitrification. The influent flow (dwf) is 30,000 m3/day and the influent BOD concentration is 300 mg BOD/l. The suspended solid concentration in the influent is 150 ...

water treatment
Which is correct for this trickling filter? a)Due to the low BOD loading rate the biomass growth will be too little. Methanol needs to be dosed to keep the biomass alive. b)Due to the high BOD loading rate the filter might clog. This can be prevented by effluent recycling in o...

Calc
At noon, ship A is 100km west of ship B. Ship A is sailing south at 30km/h and ship B is sailing north at 15km/h. How fast is the distance between the ships changing at 4:00pm?

Chemistry
PLEASE HELP! I was just wondering why it is important to add an NaOH pellet to a nucleophile containing solution with ethanol before adding an electrophile.

waste water treatment
3G man?

waste water treatment
screen -->coarse material grit chamber -->xxx primary sedimentation -->xxx anaerobic tank-->xxxx anoxic tank--->xxxx aerobic tank-->nitrification final clarifier-->xxxx sludge dewatering -->remove water from the sludge help me with Q3C Q3D Q3E

Science please
Kinetic energy and Potential energy are often considered to be forms of mechanical energy. List three other forms of energy and state a source for each.

Chemistry
(a) Which of the following are requirements for anionic polymerization? --A double bond --End groups which can react by releasing a small molecule --A strong base to initiate the reaction --A strong acid to initiate the reaction --An electron-withdrawing group near the double ...

Chemistry
finally i got it F Cl COOCH3

Chemistry
COOCH3 and CH2CH3 is wrong

Chemistry
COOCH3 is wrong

Chemistry
Did you find the last quetion of homework 11?

Chemistry
thanks

Chemistry
@Drew can you give me the formula?

Chemistry
1- 7.36e-2 189 2-metal Solid hydrogen has a half filled s-band insulator Solid helium has a filled s-band 3-1.13 semiconductor 4-Ionization of phosphorus requires some minimum temperature n_type The concentration of conduction electrons is fixed by the concetration of phosphor...

Chemistry
if someone help with those questions I'll post all the rest of answers

Chemistry
3//1.13 ev semiconductor 4//4th option n-type 4th option intrinsic

Chemistry
a)The Young's modulus for a material is 5.0*10^10 N/m2. The material is stretched to a strain of 4.0*10^-3. How much elastic energy will be expended? (Express your answer in J/m3) Knowing that the energy associated with the formation of 1 mole of vacancies in copper (Cu) i...

Solar Energy
it is wrong! I'm sure!

Biology
Please help! i was wondering why a genome size determined in a lab would be smaller than that of the actual. thanks

Biochemistry
Please help! i was wondering why a genome size determined in a lab would be smaller than that of the actual. thanks

Physics please HELP
1- 19.2E-19 2-??? 3-1 4-4.8E-5 5-3.84e-23 6-h-(2*ke*lambda*q)/(l*ks) 7-(E*q)/(m*g) 8-D 9-7e-6 10-3.6e7 11-??? 12-3rd option 13-54e9 14-408.5E-12 15-4.902E-9 16-2.451E-9 17-6000 18-96E-17 19-1053787047200878.1558726673984632 20-increase 21-stay the same 22-increase 23-increase ...

Science
1. The sporophyte generation produces spores that grow into a(n) (1 point) gametophyte. gymnosperm. angiosperm. pupa. 2. Placental mammals develop (1 point) in an egg laid in water. in a pouch on the mother’s body. inside the mother’s body. inside an amniotic egg. 3....

Chemistry
How would I extract benzophenone from acetylsalicylic acid? thanks

Chemistry
If I have 1.00 mM NaCl and 4.32 mM NaCl, how do I calculate the ionic strengths of each? Thanks

PHYSICS(HELP)
For v_1, you have sqrt(v_0^2 - 2*G*(L(1 - cos(alpha)))), right? For tension, you use T = Fgravitational + Fcentrifugal, where Fg = m*g*cos(alpha) and Fc = m*(v_1)^2/L. Then for max height you'll have something like this: (v_1 * sin(alpha))^2/(2*G), and for alpha you use yo...

PHYSICS(HELP)
Well, think a little... If you're at an infinity distance, your gravitational potential must be zero, as you see: -mMG/distance, if distance is infinity, it doesn't metter -mMG as somehow it is some constant. So, you have some velocity at "infinity" so you ha...

ET3034TUx Solar Energy
Thank you! but it's not only a) !!

ET3034TUx Solar Energy
Which of the following processes is used in order to fabricate mono-crystalline silicon? a) The Czochralski process b) Silicon ribbon process c) The float-zone process d) The silicon casting process

Chemistry
How do I determine which atom in a molecule would be the strongest base? Thanks

Solar Energy Please Help
@foxman thinks

Mathhh
Use substitution to solve the system of equations given below. 8x - 4y = 16 2x - y = 4

Chemistry
Help! If I have 0.0031 absorbance/sec, how would I convert this to absorbance/minute? Thanks

calculus
I really need help on this!!!!

calculus
Let y =x arcsin x, x is an element of ]-1, 1[. Show that d^2y/dx^2 = 2-x^2/(1-x^2)^3/2

Math- Urgent
2e = 4e -16 -4e -4e -2e=-16 /-2 /-2 e=8

math
x+4=-8 do you have to solve for x?

math
I completely forgot the rules but.... if you have ((1-x)^1/2)^2 Then would you multiply the exponents to get 2/2 = 1 or add them to get 3/2

algebra
2 cm. i think

Math please help
You have to set up a proportion. 2/3 = 12/x solve for x 2x=36 x=18

algebra
3. I think Because you take the total number of problems (48) and divide that by 2 = 24. Then divide that by 2 = 12. And divide that by 2= 6. And divide that by 2 = 3. He needs to complete 3 problems on the first day for the number of problems completed to double each day for ...

math
please help me. I don't know what I am doing wrong

math
I tried to use the quotient rule but I get stuck simplifying it. I got (sqrt1-x^2)(1/sqrt1-x^2) - (x+arcsinx)(1/2(1-x^2)2x) / (sqrt1-x^2)^2

math
*use the quotient rule

math
I get stuck on the second derivative, trying to get it to equal 2-x^2/(1-x^2)^3/2. I think that from my first derivative, you have to sure the quotient rule

math
xarcsinx*

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